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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Dimensions of Non-metallic flat gaskets for pipe flanges
WITHDRAWN published on 29.4.2003
Selected format:Dimensions of non-metallic flat gaskets for pipe flanges
WITHDRAWN published on 25.8.2008
Selected format:Asbestes rubber gaskets for steel pipe flanges with full face
WITHDRAWN published on 25.4.1988
Selected format:Asbestes rubber gaskets for steel pipe flanges with raised face
WITHDRAWN published on 25.4.1988
Selected format:Asbestes rubber gaskets for steel pipe flanges with male and female face
WITHDRAWN published on 25.4.1988
Selected format:Asbestes rubber gaskets for steel pipe flanges with tongue and groove face
WITHDRAWN published on 25.4.1988
Selected format:Tussah silk fabrics
WITHDRAWN published on 15.6.1988
Selected format:Tussah silk fabrics
WITHDRAWN published on 5.9.2007
Selected format:Dimensions of metallic ring-joint gaskets for use with steel pipe flanges
WITHDRAWN published on 10.11.2003
Selected format:Octagonal metallic ring gaskets for steel pipe flanges joints
WITHDRAWN published on 25.4.1988
Selected format:Latest update: 2024-09-08 (Number of items: 2 346 102)
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